Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/17935
Title: Running-Intensity Fluctuations in Elite Rugby Sevens Performance
Contributor(s): Furlan, Nicola  (author); Waldron, Mark  (author); Shorter, Kathleen  (author)orcid ; Gabbett, Timothy J (author); Mitchell, John (author); Fitzgerald, Edward (author); Osborne, Mark A (author); Gray, Adrian  (author)orcid 
Publication Date: 2015
DOI: 10.1123/ijspp.2014-0315
Handle Link: https://hdl.handle.net/1959.11/17935
Abstract: Purpose: To investigate temporal variation in running intensity across and within halves and evaluate the agreement between match-analysis indices used to identify fluctuations in running intensity in rugby sevens. Methods: Data from a 15-Hz global positioning system (GPS) were collected from 12 elite rugby sevens players during the IRB World Sevens Series (N = 21 full games). Kinematic (eg, relative distance [RD]) and energetic (eg, metabolic power [MP]) match-analysis indices were determined from velocity-time curves and used to investigate between-halves variations. Mean MP and RD were used to identify peak 2-minute periods of play. Adjacent 2-minute periods (prepeak and postpeak) were compared with peak periods to identify changes in intensity. MP and RD were expressed relative to maximal oxygen uptake (VO₂max) and speed at VO₂max, respectively, and compared in their ability to describe the intensity of peak periods and their temporal occurrence. Results: Small to moderate reductions were present for kinematic (RD; 8.9%) and energetic (MP; 6%) indices between halves. Peak periods (RD = 130 m/min, MP = 13 W/kg) were higher (P < .001) than the match average (RD = 94 m/min, MP = 9.5 W/kg) and the prepeak and postpeak periods (P < .001). RD underestimated the intensity of peak periods compared with MP (bias 16%, limits of agreement [LoA] ± 6%). Peak periods identified by RD and MP were temporally dissociated (bias 21 s, LoA ± 212 s). Conclusions: The findings suggest that running intensity varies between and within halves; however, the index used will influence both the magnitude and the temporal identification of peak periods.
Publication Type: Journal Article
Source of Publication: International Journal of Sports Physiology and Performance, 10(6), p. 802-807
Publisher: Human Kinetics, Inc
Place of Publication: United States of America
ISSN: 1555-0273
1555-0265
Fields of Research (FoR) 2008: 110604 Sports Medicine
110699 Human Movement and Sports Science not elsewhere classified
Fields of Research (FoR) 2020: 420702 Exercise physiology
Socio-Economic Objective (SEO) 2008: 929999 Health not elsewhere classified
Socio-Economic Objective (SEO) 2020: 200201 Determinants of health
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article

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